Pick and pick multiplier for looms



Get. 19 1926.

A. A. GORDON PICK AND PICK MULTIPLIER FOR LOOMS Filed April 17, 1925 Patented Get. 19, W26.

UNH'EE S'tAiFEd earner OFFICE.

ALBERT A. GORDON, 9F W'GBCESTER, MASSACHUSETTS, ASSIGNOR TO GROMP'I ON &; KNOWLES LGOM WORKS, F WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

PICK AND PICK MULTIPLIER FOR LOOMS.

Application filed April 17, 1925.

This invention relates to improvements in multiplier mechanisms for looms and more particularly to improvements in the form of multiplier shown in my prior Patent No. 1,142,161 issued June 8, 1915.

The mechanism set forth in said patent comprises a main chain cylinder over which extend the levers which control the boxes. Each lever is connected to a downwardly extending box controlling link which is provided with an adjustable clip by means of which the link may be raised by indepen dent mechanism comprising auxiliary arms lying under the clips and arranged to be raised and lowered by cams to permit the weaving of two different patterns. When it is desired to weave a comparatively long repeat the independent mechanism will be inactive to permit the main pattern chain to determine the sequence in which the shuttles shall become active. When it is desired to change to a shorter repeat such for instance as the socalled pick and pick ortwo up and two down, the main pattern chain becomes inactive and the cams are started 1n motion to raise the auxiliary arms and the links.

I have found in actual practice that the mechanism shown in said patent cannot be extended to conveniently weave a repeat calling for two up and two down or a somewhat longer repeat and it is the principal object 01 my present invention to substitute a short chain for the cams, this substitution permitting the use or a greater variety of short repeats.

It is a further and more detailed object of my invention to provide improved pattern chain elements to the end that four diiiferent positions of two levers may be ob tained by the use of three different links or pattern chain elements.

With these and other objects in View which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein I have shown a convenient embodiment of 'my invention,

Fig. 1 is a fragmentary view showing portions of the multiplier mechanism to which my invention relates,

Serial No. 23,919.

Fig. 2 is a top plan view of portions of the mechanism shown in Fig. 1 looking in the direction of arrow 2,

Fig. 3 is a top plan view of a portion of the chain showing my improved chain elements,

Fig. 4 is one of the chain elements used to permit both the levers to be down,

Fig. 5 shows an element to be used when both levers are to be raised, and

Fig. 6 .shows my improved reversible link to he used when one lever is to be raised and the other is to be lowered.

In the accompanying drawings I have shown only such portions of the multiplier mechanism as enter into the present invention and for a more complete understanding of the operation of the parts shown herein reference may be had to my aforesaid patent. Referring to Figs 1 it will be seen that I have provided a stand 10 which supports a shaft 11 on which is rotatably mounted a chain cylinder 12 having recesses to receive the bars 13 of a pattern chain indicated at 14. The pattern chain is formed in part of so-called sinker-s 15 and in part of chain bars or risers 13. A fixed pivot 17 secured to the stand 10 has pivotally mounted thereon pattern levers 18 and 19, respectively, which extend over the pattern chain 14 as shown in Fig. 2 and are provided with counter-weights 20.. The end of each lever is slotted as at 21 to receive the head 22 of a link, the levers 18 and 19 being connected to lifter rods 23 and 24, respectively. Each rod is provided with a clip 25 adjustably mounted thereon and held in adjusted position by nuts 26.

A shaft 27 is secured to the stand 10 and has pivotally mounted thereon a pair of auxiliary arms or fingers 28 and 29, respectively, the finger 2S lying under the clip secured to red 23 and the finger 29 extending under the clip secured to rod 2 1. The star wheel 30 is secured to a' shaft 31 and is actuated by a pin wheel 32 which is not driven continuously but is controlled by a yoke 33 to have driving connection with some constantly driven part of the mechanism at predetermined intervals. The matter thus far described is substantially the same as set forth in my aforesaid patent and forms no part of my present invention.

My invention relates more particularly to the pattern mechanism actuated by the pin wheel 30 and as shown herein I have provided a chain cylinder similar in con struction to the chain cylinder 12 and having spaces 41 and points 42. by means of which the chain may be actuated. The chain comprises a plurality of links which are of proper form to produce the desired repeat.

As shown in Figs. 3 to 6 my improved chain may be made from three different forms of links,these different forms being indicated at 50, 60 and 70. By referring to Fig. 3 it will be seen that each end of each link has a relatively broad lug 4:3 and a narrower lug l lseparated therefrom by a space 4:5 approximately the width of the broad lug. The lugs on one end of a link are opposite spaces of the same width on the other end to permit them to be reversed. Aligned holes 46 extend through the lugs to receive cotter pins 4C7 by means of which the links are held together to form achain. The central portion of the link be tween the lugs is continuous across the whole width of the link to present a pattern surface for contacting with the arms 28 and 29.

By referring to Fig. 4: it, will be seen that the link has both sides of the pattern surface 48 thereof low so that when link 50 is under the fingers 28 and 29 they will both be indown position. By referring to Fig. 5 it will be seen thatthe pattern surface of link is raised as at 49 so that when a link of this type is under the fingers 28 and 29 one side and a low surface 51 on the other side thereof so that when alink of this type is under fingers 28 and 29 one of said levers will be up and theother of said levers will be down. 7

As shown in Fig. '6 the far side of the link 70 is high and the near side is low so that when a link of this type is under the fingers 28 and 29 the latter will be'in raised and the former in lower position. If it is desired to alternate the position of the fingers it is merely necessary to reverse the link 70, the relation of the lugs 43 and 44 being such that the lugs may be turned end for end and assembled. Because of the disposition of the lugs it is possible to make a link of the type shown at 70 serve for two purposes, namely,

either to position the fingers as shown in Fig. 1, or by reversing the link to give-the fingers the opposite setting.

It is to be understood that inthe operation of the multiplier the pattern chain 14 will rotate to actuate the leverslS and 1:) when a large repeat is being wovensuch for instance as a border or heading and when this ,portron of the weave is completed the cylinder 12 will come to rest with both levers 18 a d 19 in down position. At the same time the pin wheel will be operatively connected to start rotating the cylinder e0 so that the fingers 28 and 29 will. be raised and lowered depending upon the character of link there under, to raise and lower the rods 23 and 24 in the desired sequence. As heretofore stated it has not'been possible to raise one of the levers 28 and 29 for two picks and to lower. it for the two following picks to give a so-called two up and two down repeat, but with the construction shown herein itis possible not only to produce this type of weave but also to produce other sequences to produce the short repeat desirable between the headings or borders of the fabric being woven. If it be desired to have a socalled pick and pick weave where one pick of one color is followed by one pick of an other color the pattern chain on the cylinder 40 may bemade up entirely of the links 70, adjacent links being oppositely disposed. As the cylinder continues to rotate the rods 23 and 24 will be alternated for each pick.

f it be desired to weave two up and two down, two links positioned as illustrated in Fig. (3 will be connected to two other links reversed from the position shown in Fig. 6 requiring four links in all and the total length of the chain will be some multi ple of'four. Various other combinations of the links 50, 60, and may be made to produce any one of a number of short repeats.

From the foregoing it will be seen tha I have provided means for moving the box controlling rods 23 and 2% from the auxiliary fingers 2S and 29 by means of a controlling pattern surface which makes it possible to produce a variety of short repeats. It will also be seen that I have provided an im proved type of pattern chain link having different controlling surfaces and so constructed that it may be reversed to alternate the positions of the controlling surfaces and still be operatively attached to the remainder of the chain. While I have shown links of double width yet I do not wish to be limited to links of this width.

Having thus described my invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention, and Ido not wish to be limited to the details herein disclosed but what I claim is:

1. In a pattern mechanism for looms, controlling rods, lingers for said rods, and a pattern chain controlling the fingers, said pattern cham being formed of links one end of each of which is provided with lugs,

V which areopposite spaces on the other end thereof a plurality of pattern controlling 10 surfaces of different heights, the element when in one position presenting the surfaces in one relation and when reversed presenting said surfaces in the opposite relation.

In testimony whereof I have hereunto af- 15 fixed my signature.

ALBERT E. GORDON. 

